The Crested Serpent Eagle was a bit of a frustrating species for me in that I only ever saw it perched along the side of motorways - not exactly ideal circumstances for viewing or photography! As the name suggests, they are reptile hunting specialists focusing on snakes and lizards, and thus seem to favour exposed perches from which they can survey for their prey. Though it is broadly a widespread and common species across Tropical East Asia, certain subspecies - particular island endemic ones - are considered endangered.